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The document discusses the working of a power supply and a unijunction transistor (UJT). It provides three key points: 1) A power supply takes 230V AC input, steps it down with a transformer, rectifies it to DC with a rectifier, filters ripples with capacitors, and regulates the output voltage with an IC. 2) A UJT works as a voltage-controlled switch. When the base 1 voltage is below a threshold, the diode is off and the capacitor charges. When the base 1 voltage exceeds the threshold, the diode turns on

Author

Jigar Pandya

Language

EN